Sentences with phrase «methane in these bubbles»

There are three possible sources of the methane in the bubbles rising out of the Siberian margin continental shelf:

Sometimes the methane in these bubbles is absorbed by the water column and never reaches the surface.

Not exact matches

Computer simulations predicted that vinyl cyanide (also called acrylonitrile or propenenitrile) could make flexible bubbles called azotosomes that would be stable in liquid methane (SN: 4/30/16, p. 28).

In addition to the isotope concentration, the air bubbles trapped in the ice cores allow for measurement of the atmospheric concentrations of trace gases, including greenhouse gases carbon dioxide, methane, and nitrous oxidIn addition to the isotope concentration, the air bubbles trapped in the ice cores allow for measurement of the atmospheric concentrations of trace gases, including greenhouse gases carbon dioxide, methane, and nitrous oxidin the ice cores allow for measurement of the atmospheric concentrations of trace gases, including greenhouse gases carbon dioxide, methane, and nitrous oxide.

Situated at 870 meters below the sea surface in Barkley Canyon, Wally uses a camera, methane detector and current flow meter to take stock of the release of methane bubbles from the seafloor.

Examining the effect of greenhouse gases on local ecology and global climate keeps Katey Walter, 32, chasing the methane that bubbles up from seeps in Arctic lakes.

As bacteria fed on the creatures that rained from above, they produced toxic gases — methane, carbon dioxide, and hydrogen sulfide — that in turn bubbled up to poison the birds and insects flying overhead.

Scientists can determine ancient atmospheric concentrations by measuring CO2 and methane levels in tiny air bubbles trapped in such ice, formed when the ice fell to the earth as snow.

Their study, showing that more methane than previously believed bubbles out of the water behind small dams, appears in ACS» journal Environmental Science & Technology.

When we were in the methane ice in the Gulf of Mexico, we used one of our submersibles that has 360 - degree visibility because you're sitting in a plastic bubble.

There is so much methane that, as it freezes instantaneously to form hydrate, it draws all the water out of the seafloor ooze and dries it out completely — and often there is methane left over, trapped as large bubbles in the porous hydrate.

«Next, we simulated methane bubble production in 1000 - litre «mini-lakes» at the NIOO, where we could accurately control temperature and other conditions,» explains Ralf Aben, biologist at Radboud University.

The biologists predict that a temperature rise of 1 degree Celsius leads to 6 - 20 percent higher emission of methane bubbles, which in turn leads to additional greenhouse gases in the atmosphere and to an additional temperature increase.

«Worldwide increase in methane bubbles due to climate change.»

First, existing research into methane bubbles was collected from various locations, ranging from a fishing pond in Malden (a town near Nijmegen) to postglacial lakes in northern Sweden and forest ponds in Canada.

In May Walter and her colleagues reported hot spots in Siberian lakes where methane bubbles up so quickly that ice never formIn May Walter and her colleagues reported hot spots in Siberian lakes where methane bubbles up so quickly that ice never formin Siberian lakes where methane bubbles up so quickly that ice never forms.

Sampling the bubbles, along with the waters in and around the plumes, will help scientists to estimate the effects of the methane emissions, says Skarke.

I'd love to know what they did take into account in attempting to model that period — must include astronomical location, sun's behavior, best estimates about a lot of different conditions — where the continents were, what the ocean circulation was doing, whether there had been a recent geological period that laid down a lot of methane hydrates available to be tipped by Pliocene warming into bubbling out rapidly.

A second possibility is that methane clathrates from the ocean are dragged along into the erupting plumes and release their methane as they rise, like bubbles forming in a popped bottle of champagne.

Local artifacts in ice core methane records caused by layered bubble trapping and in situ production: a multi-site investigation, Climate of the Past, 12, p. 1061 - 1077.

The main hardware in the existing research infrastructure at IFE Hynor is found in a process room for testing and development of high temperature hydrogen production and solid oxide fuel cell technology (SOFC), including a Dual Bubbling Fluidized Bed reactor prototype (DBFB) for continuous hydrogen production by sorption - enhanced reforming (SER) of methane with an integrated process for CO2 - capture.

If you dive even in the shallow waters of the Gulf Coast you can see methane bubbling to the surface.

I'll say something «lurid» because the change from the 2010 report to this report, at my best estimate, is a 22x to 33x increase in methane bubbling up from the sea bed over just those two years.

From the article: «Methane is a short - lived gas in the atmosphere... The bubbles mostly dissolve in the water column...»

Siberia has explosion holes in it that smell like methane, and there are newly found bubbles of methane in the Arctic Ocean.

An increase in temperature or a decrease in pressure in the ocean waters overlying these sediments can melt this buried methane and allow it to bubble to the surface.

In the past few days, the researchers have seen areas of sea foaming with gas bubbling up through «methane chimneys» rising from the sea floor.

To get around this problem, Thomas Blunier and colleagues nearly ten years ago pioneered an ingenious method to synchronise the ice cores of Greenland and Antarctica by analysing changes in the amount of methane in air bubbles in the ice.

«the European Project for Ice Coring in Antarctica (EPICA) established a precise link between climate records from Greenland and Antarctica using data on global changes in methane concentrations derived from trapped air bubbles in the ice.»

Euan Nisbet, a University of London scientist from a team that found methane bubbling elsewhere in the Arctic, said this in an e-mail message:

That means that, at least in the locations they sampled, methane has been bubbling for quite a long time.

In order to find out if these plumes are the result of that recent warming or are simply a feature of the area, a team of researchers led by Christian Berndt of Germany's GEOMAR Helmholtz Centre for Ocean Research Kiel used a submersible to get a look at the seafloor where the methane is bubbling up.

What about the bubbles of methane they just found in the Arctic ocean?

I believe that reaction takes much longer than bubbles require to reach the surface; the methane released in these bubble sites or in rapid events like underwater landslides) either dissolves in water or reaches the atmosphere in a matter of minutes, according to what was posted here earlier.

Elsewhere in the same paper, Archer describes how this could come from the methane trapped in the ice being smoothed through «diffusion within the fern or heterogeneous bubble closure depth,» or simply through the methane sampling not being dense enough, where the maxima of release could be overlooked [Archer, Methane hydrate stability and anthropogenic climate change, Biogeosciences,methane trapped in the ice being smoothed through «diffusion within the fern or heterogeneous bubble closure depth,» or simply through the methane sampling not being dense enough, where the maxima of release could be overlooked [Archer, Methane hydrate stability and anthropogenic climate change, Biogeosciences,methane sampling not being dense enough, where the maxima of release could be overlooked [Archer, Methane hydrate stability and anthropogenic climate change, Biogeosciences,Methane hydrate stability and anthropogenic climate change, Biogeosciences, 2007].

Two recent studies of methane emissions from frozen sea - bed sediments, including one published in Science and described in The Times today, found substantial bubbling flows of methane, a potent greenhouse gas, were reaching the atmosphere.

I read online within the past two weeks that Russian scientists were up in the northern oceans somewhere and they saw tons of hot spots of methane bubbling out from the ocean surface.I think it was in ScienceDaily.The question posed by these scientists was «is this outgassing a normal melting of methane that has been going on for many thousands of years, or, is it an upward tick of significance?»

Also, when the methane and water combine to make clathrate, they reject most of the salt in the water, making salty brines that are harder to freeze, until clathrate, salty water, and free gas can coexist, allowing the free gas to escape in some places by bubbling through the salty water.

PS: On further reflection, I don't think I want to be fighting being alarmed about methane bubbles in the Arctic.

In the new study, researchers used a combination of aerial surveys, remote sensors and year - round measurements of places in two Siberian lakes where methane bubbling was known to occuIn the new study, researchers used a combination of aerial surveys, remote sensors and year - round measurements of places in two Siberian lakes where methane bubbling was known to occuin two Siberian lakes where methane bubbling was known to occur.

In another spot along the shore of Dillon Reservoir in Summit County, Colorado, pancake - shaped methane bubbles from decomposing vegetation were temporarily halted during their journey to the atmospherIn another spot along the shore of Dillon Reservoir in Summit County, Colorado, pancake - shaped methane bubbles from decomposing vegetation were temporarily halted during their journey to the atmospherin Summit County, Colorado, pancake - shaped methane bubbles from decomposing vegetation were temporarily halted during their journey to the atmosphere.

This, combined with winter expedition results that found methane gas trapped under and in the sea ice, showed the team that the methane was not only being dissolved in the water, it was bubbling out into the atmosphere.

In both cases, methane gas bubbles to the surface with little or no oxidation, entering the atmosphere as CH4 — a powerful greenhouse gas which increases local, then Arctic atmospheric and ocean temperature, resulting in progressively deeper and larger deposits of clathrate meltinIn both cases, methane gas bubbles to the surface with little or no oxidation, entering the atmosphere as CH4 — a powerful greenhouse gas which increases local, then Arctic atmospheric and ocean temperature, resulting in progressively deeper and larger deposits of clathrate meltinin progressively deeper and larger deposits of clathrate melting.

Each time they go there's more and more bubbles coming out, and the fear is that there'll be a general release of methane trapped under those sediments, which could cause a very rapid rise in the rate of sea level.

This methane can be emitted to the atmosphere in several ways: either as bubbles or by diffusion through the surface of the reservoir itself, or it can be emitted as the water is drawn from deep in the reservoir to pass through the turbines or spillways.

These «methane chimneys» sometimes contained concentrations of the gas 100 times higher than background levels and were so large that clouds of gas bubbles were detected «rising up through the water column,» Orjan Gustafsson of the Department of Applied Environmental Science at Stockholm University and the co-leader of the expedition, said in an interview.

The destabilized hydrates would turn into methane gas bubbles and warm the atmosphere, Wadham and colleagues reported in a study published in Nature in 2012.

Off the Washington and Oregon coast, 168 bubble plumes had been detected in the past 10 years, a disproportionate number of which were found at a critical depth for methane hydrates» stability.

In 2012, expeditionary teams in the Arctic were shocked, and dismayed, to find methane bubbling up from deep ocean siteIn 2012, expeditionary teams in the Arctic were shocked, and dismayed, to find methane bubbling up from deep ocean sitein the Arctic were shocked, and dismayed, to find methane bubbling up from deep ocean sites.

Methane is produced in sediments below the soil's water table and travels upward through the soil, through the stems of some plants or by bubbling through standing water (ebullition).